Chapter15Climate - 1. Chapter 15 World Climates 2 Weather...

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1. Chapter 15 World Climates 2 Weather – the state of the atmosphere at a given time Climate – description of aggregate weather conditions; the sum of all statistical weather information that helps describe a place or region. Consider variations, extremes and averages (T° and Precipitation) 3 World Climates – Greeks (Torrid, Temperate, Frigid) 4 World Climates based on the Köppen Classification 5 Köppen Classification Most widely used - Uses easily obtained data: T and precipitation - Criteria are unambiguous, easy to apply, and is a natural subdivision Natural vegetation is one of the best descriptors of Climate 6 Köppen Classification Boundaries fluctuate or are transitional – should not be viewed as fixed lines; the line is an average on the map 7 Köppen Classification Five 1 st Order Climate Groups (A, C, D, and E based 1 st on T°; B is primarily based on rainfall) A - Humid Tropical: winterless climates; mean T° >18°C (64°F) all year B – Dry: evaporation exceeds precipitation; constant water deficiency C – Humid Middle-Latitude, Mild Winter: avg. T° of the coldest month is below 18°C (64°F) but above -3°C (27°F) D – Humid Middle-Latitude, Severe Winter: avg. T° of the coldest month is below -3°C (27°F) and the warmest monthly mean exceeds 10°C (50°F) E – Polar: Summerless climates; avg. T° of warmest month is <10°C (50°F)
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8 Köppen Classification 1 st , 2 nd , 3 rd Order Dominant criteria are T and precipitation 2 nd and 3 rd order data further classify the 5 groups based on T, rainfall, and location 9 Climate Controls - Many of these we have considered before for weather - The map is not haphazard but controlled by similar properties Controls - Latitude - Distribution of Land and Water - Geographic Position and Prevailing Winds - Mountains and Highlands - Ocean Currents - Pressure and Wind Systems 10 Latitude - Solar radiation is most important control on T° and
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This note was uploaded on 04/17/2008 for the course GGY 120 taught by Professor Shew during the Spring '08 term at University of North Carolina Wilmington.

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Chapter15Climate - 1. Chapter 15 World Climates 2 Weather...

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